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Finding the Fourth Proportional to 385,437.88, 578,115.33 and 101,156.92

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Solution

The fourth proportional to 385,437.88, 578,115.33 and 101,156.92 is: 151,724.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,437.88 : 578,115.33 = 101,156.92 : x
  2. Step 2: Convert to fraction form
    385,437.88/578,115.33 = 101,156.92/x
  3. Step 3: Cross multiply
    385,437.88x = 578,115.33 × 101,156.92
  4. Step 4: Simplify right side
    385,437.88x = 58,480,366,187.58
  5. Step 5: Solve for x
    x = 58,480,366,187.58/385,437.88
  6. Step 6: Final answer
    x = 151,724.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.